11 min read · Google Ads · Last updated July 2026
Quick answer: A well-structured Google Ads account separates campaigns by goal, product, or geography; each ad group contains tightly themed keywords (5-15 per group); and every ad speaks directly to those specific keywords. Structure determines Quality Score, which determines CPC.
Introduction
Poorly structured accounts are the number one cause of wasted Google Ads budget. Not high bids. Not bad ad copy. Structure.
An e-commerce brand selling running shoes and hiking boots lumps everything into one “Products” campaign. Running shoe keywords trigger hiking boot ads. Quality Scores drop to 3-4. CPCs climb 50%. The account burns $8,000/month and the team wonders why ROAS is awful.
The fix is structural. Campaign structure is not exciting — but it’s the single biggest lever for reducing CPC and improving performance across every metric.
What you’ll learn:
– The four-level hierarchy and what belongs at each level
– When to create separate campaigns vs ad groups
– How structure affects Quality Score and cost
– The campaign segmentation approaches used by high-performing accounts
Table of Contents
- The Four-Level Hierarchy
- Campaign-Level Decisions
- Ad Group Best Practices
- Keyword Organisation
- Ad Structure and RSAs
- When to Segment vs Consolidate
- Shared Budgets
- Campaign Types and Structure
- FAQ
The Four-Level Hierarchy
Google Ads has four levels: Account → Campaign → Ad Group → Keyword/Ad. Each level controls different settings and aggregates the data below it.
Campaign level is where budget lives. Every campaign has its own daily budget. This means campaigns compete only with themselves — they don’t share a pool unless you set up shared budgets explicitly.
Ad group level is where relevance is built. The tighter the theme, the higher the Quality Score. An ad group about “women’s running shoes” should not contain keywords about “men’s trail shoes.” Same product category, different intent, different audience.
Campaign-Level Decisions
The campaign is your budget allocation and targeting unit. Before creating a campaign, answer three questions:
- Does this deserve its own budget, or can it share a budget with something similar?
- Does this target a different location or device mix?
- Does this have a different goal (brand awareness vs conversion)?
Common campaign segmentation approaches:
By product or service category
Recommended for most accounts. A digital agency might have: Brand | Web Design | SEO | Google Ads | Paid Social.
By geography
When CPCs, competition, or conversion rates vary significantly by location. A law firm might run Sydney, Melbourne, and Brisbane as separate campaigns to control budget by city.
By funnel stage
Separate campaigns for top-of-funnel (awareness, informational queries) vs bottom-of-funnel (purchase-ready terms). Different bidding strategies, different messaging.
By match type (legacy approach)
Previously, advertisers would run Exact Match campaign vs Broad Match campaign for the same keywords. With modern smart bidding, this is less necessary — but some accounts still do it for bid control.
Ad Group Best Practices
Every ad group should pass the “coffee cup test”: if you wrote all the keywords in an ad group on a napkin, should they all appear in the same headline? If yes, they belong together. If not, split them.
Recommended ad group size: 5-15 keywords. Not 50, not 100.
Large ad groups with many keywords force you to write generic ads that don’t speak to any specific keyword. “Professional Services in Australia” speaks to no one. “Web Design for Small Business Sydney” speaks to someone searching “web designer sydney small business.”
Single Keyword Ad Groups (SKAGs): An older strategy where each ad group contained one keyword with three match types. Gave maximum control and relevance. Today, with RSAs and smart bidding, 3-8 closely related keywords per ad group performs similarly while being easier to manage.
Negative keywords at ad group level: Use ad group-level negatives to prevent overlap. If you have an ad group for “web design” and another for “web maintenance,” add “maintenance” as a negative to the design ad group and “design” as a negative to the maintenance ad group.
Keyword Organisation
Within each ad group, use a mix of match types:
– Exact match to protect budget on your highest-converting terms
– Phrase match to capture variations with intent
Organise keywords around searcher intent, not just topic. “How much does web design cost” (research intent) and “hire web designer sydney” (commercial intent) should be in different ad groups with different landing pages.
Ad Structure and RSAs
Each ad group should have at least 2 RSAs (Responsive Search Ads). Write 12-15 unique headlines — not variations of the same headline. Google needs diverse assets to test.
Headline categories to include:
– The keyword / service name
– Location (if relevant)
– Main benefit
– Secondary benefit
– Social proof (number of clients, years in business, awards)
– Pricing signal (“From $X”, “Fixed-Price Plans”)
– Urgency / CTA
– Problem the service solves
Pin your most important headline to Position 1 only if it must always show — otherwise let Google test freely. Over-pinning reduces learning.
Every ad in an ad group should link to the same landing page (or a near-identical variant). If your keywords point to different landing pages, they need different ad groups.
When to Segment vs Consolidate
Modern Google Ads trends toward consolidation. Smart bidding works better with more conversion data in one place. But consolidation can hurt if your services are too different.
Segment (separate campaigns) when:
– Different daily budgets are needed
– Different geo targeting required
– Dramatically different CPAs per product/service
– Different ad scheduling needs (e.g., phone-based service only advertises during business hours)
– Brand vs Non-brand (always separate these)
Consolidate (same campaign/ad group) when:
– Products are very similar with similar CPAs
– Budget is under $2,000/month (consolidating helps reach smart bidding data thresholds faster)
– Same audience, same landing page, same goal
A $5,000/month account might perform better with 3 tightly funded campaigns than 15 campaigns at $333/day each — especially if each campaign needs 50+ conversions/month for Target CPA to work well.
Shared Budgets
Shared budgets let multiple campaigns draw from the same budget pool. Google automatically distributes spend to whichever campaign is getting the best results in real-time.
Use shared budgets when:
– You have multiple similar campaigns targeting the same audience in different regions
– You want Google to auto-balance between brand and non-brand
Avoid shared budgets when:
– Campaigns have different CPAs or business values
– You need predictable spend in each campaign
– One campaign consistently outcompetes others (it will take all the budget)
Campaign Types and Structure
Each campaign type has different structural considerations:
Search campaigns: Structure as described above. Segment by theme, use tight ad groups.
Performance Max campaigns: Segment by product category or service type. Each PMax campaign needs its own asset groups. Don’t mix unrelated products in one PMax campaign — Google can’t tell where to focus creative.
Shopping campaigns: Structure by product priority. High-margin products get their own campaign with higher bids. Long-tail product campaigns can sit in lower-priority campaigns.
Display/Demand Gen: Structure by audience type (remarketing vs prospecting). Separate creatives for each audience.
FAQ
Q: How many campaigns should I have?
A: Start with as few as needed. A service business might start with just 2: Brand + Non-Brand. Add campaigns when you have budget to fund them properly (at least $1,000/month per campaign for meaningful data).
Q: Should every product have its own campaign?
A: Not necessarily. Group products with similar audiences, similar CPAs, and similar landing pages into the same campaign. Separate campaigns only when you need different budgets or targeting.
Q: What’s the maximum number of ad groups per campaign?
A: Google allows up to 20,000, but best practice is 10-30 per campaign. Beyond that, campaigns become difficult to manage and optimise.
Q: Is it better to have one big campaign or many small ones?
A: For smart bidding, fewer campaigns with more conversion data per campaign generally performs better. One well-funded campaign with 100 conversions/month outperforms five under-funded campaigns with 20 conversions each.
Q: How often should I restructure my account?
A: Major restructuring every 6-12 months. Minor adjustments (adding ad groups, splitting themes) every quarter. Don’t restructure constantly — it resets learning periods and disrupts data continuity.
Conclusion
Campaign structure is invisible when it’s done well — you just see lower CPCs, higher Quality Scores, and more conversions. It’s visible when it’s done poorly — in wasted spend, irrelevant ad serving, and quality scores stuck at 3-4.
The core principle: every ad should be so relevant to the keywords in its ad group that a searcher reads it and thinks “this was written for my exact search.” Structure makes that possible.
Work With Ignited Nepal on Google Ads
Our Google Ads team manages campaigns across Australia, UAE, Nepal, USA, and UK — focused on verified conversions, not just clicks.
Written by the Ignited Nepal paid acquisition team. ignitednepal.com